How to highlight current date in calendar control in asp.net C#, VB

Introduction: In this article i am going to share the code trick to highlight current/today's date in asp.net calendar using code behind or by setting the calendar's attributes in asp.net using both C# and VB languages.

In previous article i explained the use of CalendarExtendar control of Ajax in asp.net and Get age in years,months,days,hours and seconds from DOB and Convert Rupees,Currency or Numbers to Words and Bind state categories and cities sub categories in single dropdownlist and Create crystal reports in visual studio 2010  and Generate random number in asp.net

Implementation: Let's create a simple web page to demonstrate the concept.

• In the design page (default.aspx) place a calendar control and set its attributes as shown below: 

<asp:Calendar ID="Calendar1"

         runat="server"

         TodayDayStyle-BackColor="Yellow"

         TodayDayStyle-ForeColor="Red"

         TodayDayStyle-Font-Bold="true"

         TodayDayStyle-Font-Size="20px">

</asp:Calendar>

--> There is another way to set the same attributes as shown below. You can use any of the two ways. Output will be the same.

<asp:Calendar ID="Calendar1"

         runat="server">

         <TodayDayStyle BackColor="Yellow" ForeColor="Red" Font-Bold="true" Font-Size="20px" />

         </asp:Calendar>

Asp.Net C# Code to highlight current date in calendar control

•  In the code behind file (default.aspx.cs)  write the code as:

  protected void Page_Load(object sender, EventArgs e)

    {

        if (!Page.IsPostBack)

        {

            Calendar1.SelectedDate = System.DateTime.Now;

           // or you can also set the current date as:

           Calendar1.TodaysDate = System.DateTime.Now;

        }

    }

Note: You can also set the TodayDayStyle property from code as:

  protected void Page_Load(object sender, EventArgs e)

    {

        if (!Page.IsPostBack)

        {

            Calendar1.SelectedDate = System.DateTime.Now;

            Calendar1.TodayDayStyle.BackColor = System.Drawing.Color.Yellow

            Calendar1.TodayDayStyle.ForeColor = System.Drawing.Color.Red

            Calendar1.TodayDayStyle.Font.Bold = True

        }

    }

Asp.Net VB Code to highlight current date in calendar control

•  In the code behind file(default.aspx.vb)  write the code as:

   Protected Sub Page_Load(sender As Object, e As System.EventArgs) Handles Me.Load

        If Not Page.IsPostBack Then        

            Calendar1.SelectedDate = System.DateTime.Now

           // or you can also set the current date using the line below:                                                                     Calendar1.TodaysDate = System.DateTime.Now

        End If

    End Sub

Note: You can also set the TodayDayStyle property from code as:

   Protected Sub Page_Load(sender As Object, e As System.EventArgs) Handles Me.Load

        If Not Page.IsPostBack Then        

            Calendar1.SelectedDate = System.DateTime.Now

            Calendar1.TodayDayStyle.BackColor = System.Drawing.Color.Yellow

            Calendar1.TodayDayStyle.ForeColor = System.Drawing.Color.Red

            Calendar1.TodayDayStyle.Font.Bold = True

        End If

    End Sub

 Now over to you:

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